Frequently Asked Questions/Normalized

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Asked Questions
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What are normalized?

Normalized glasses are slightly undercorrected for distance vision, usually no more than 0.25 diopters. They are combined with Active Focus and distance vision to improve eyesight.

How do I reduce normalized?

See Guide:Reducing normalized.

From the blog: reducing normalized

When should I reduce normalized?

Jake says:

James asks in the forum:

I was wondering when the best time to reduce the normalized prescription is. I feel like with past reductions I may have done them earlier than necessary, resulting in less enjoyable vision and slower progress. I think I heard from the blog or forum that when you can see 20/20 consistently for two full weeks it is a good time to reduce. Is this the case? If so, is this 20/20 in outdoor light, 1000 lux, or a more typical 200 lux scenario?

Here’s what I tell James, and a good set of guidelines for you:

What tends to work well is to reduce after you reach the same acuity as with your previous prescription. Ideally you’d wait a while before changing from there (a few weeks at least). So if you set yourself 20/20 in indoor light as your comfortable baseline, you’d change again a few weeks after you hit 20/20 with the new normalized.
The rationale here is that you have your own blur horizon distance preference. Some like 20/50 indoor, some are more comfortable with a 20/30, for example.
Initial reductions are a bit more volatile, since you initially tend to start with an overprescription, and your first normalized just brings you down to 20/20 or 20/30. Eventually, for most, an indoor 20/50 works well (since it translates to an outdoor 20/30 or better). But once you are in a groove of reductions, changing when you hit the target Snellen line works well.
Another caveat is plateaus. IF you find yourself not ready after 4 months on the same prescription, sometimes forcing the next 0.25 bump can help restart stimulus (though that one, check with me first).